RefComment: Written for scientists and researchers in the fields of physics and chemistry

Abstract: The magnetic properties of silicates and phosphates are compiled in subvolume 27I. While subvolume 27I1 deals with orthosilicates, the present subvolume 27I2 deals with sorosilicates. Further subvolumes are dedicated to other types of silicates (cyclosilicates, inosilicates, phyllosilicates, tectosilicates) and to phosphates. - Silicates are very complex systems, covering large classes of minerals as well as synthetic samples. Their crystal structure is discussed and atomic positions are given. In addition to magnetic properties, results of neutron diffraction studies, nuclear γ resonance, nuclear magnetic resonance, transport properties, dielectric and optical data are reviewed.

Abstract: Volume III/7 contains structure data on those compounds which contain at least one of the elements F, Cl, Br, I, O, N, and P and cannot be called "organic". The structure data of the remaining inorganic compounds and the elements are dealt with in volumes III/6 and III/14, while the organic compounds are treated in volumes III/5 and III/10. The systematic arrange-ment is based on the anions ordered according to "key elements", since this system allows the arrangement of the crystal structure data in such a way that both chemical and crystallographical relationships can be recognized. Structure data are compiled as completely as possible for all inorganic substances, where crystal structures have been examined by means of X-ray, neutron, and electron diffraction,and for which at least the lattice constants have been determined.